Barbara Maitland is the wife of Adam Maitland. She and Adam were newlyweds when they passed away. She wanted to start a family when she was alive but failed, which would probably explain her motherly bond with Lydia Deetz.
Barbara was a woman who loved the simple life, preferring to stay at and decorate her home rather than go on vacation. She partially regretted her death wish when she and Adam return home, as she got cabin fever from not being able to leave the house (this excluded going to the afterlife or Saturn). She was also irritated that she could not leave the house to get her vacuum cleaner, as it was in the garage.